http://localhost:8080/xmlui/handle/123456789/1797 Wed, 28 Jan 2026 13:04:33 GMT 2026-01-28T13:04:33Z http://localhost:8080/xmlui/handle/123456789/1811 Title: Evaluation of Ulsoor tank lake water quality Authors: Mr Bhavan Kumar; Mr Bhavan Kumar Abstract: Ever increasing population, urbanization and modernization are posing problems of sewage disposal and contamination of surface waters like lakes. Natural water gets contaminated due to weathering of rocks, leaching of soils and mining processing, etc. Various types of problems in lake which cause nutrient enrichment in lake have been reviewed. Land use change and longer growing seasons could increase the use of fertilizers with subsequent leaching to watercourses, rivers and lakes, increasing the risk of eutrophication and loss of biodiversity. Water quality can be assessed by various parameters such as BOD, Electrical Conductivity, Nitrate, Phosphate, Potassium, Dissolved Oxygen, etc. Heavy metals such as Nickel, Lead, chromium are of special concern because they produce water or chronic poisoning in aquatic animals. Harmful algal blooms are becoming increasingly common in freshwater ecosystems globally. Pollution by plastic debris is an increasing environmental concern in water bodies, where it affects openwater and benthic environments. Surface water densities of plastics are as high as those reported for areas of litter accumulated. Different methods have been used to analyse the water quality of lake such as Hyperion, water quality index and hazard quotient. It is recommended that pollution prevention and water re-use should be adopted in combination with the recycling of nutrients in controlled urban agriculture http://localhost:8080/xmlui/handle/123456789/1811 http://localhost:8080/xmlui/handle/123456789/1812 Title: A Literature Review on Flexural and Shear Behavior of Geopolymer concrete Beam with Carbon Fiber Authors: S.B. Anadinni; S.B. Anadinni Abstract: In 1979 Davidovits introduced the Geopolymer concrete to reduce the use of ordinary Portland cement. The depletion of the ozone layer and global warming issue has increased more awareness of the construction industries to use eco-friendlier materials. The use of Geopolymer technology could reduce the CO2 emission in to the atmosphere, caused by cement industries by about 80%. The use of Geopolymer concrete has started to gain attention in the field of research and construction practices, due to its numerous advantages in using the by-product waste to replace cement and also to reduce the greenhouse gas emission at the time of its production. Fly ash and GGBS which is one of the source materials for Geopolymer binders and also available abundantly in India, but the utilization till date is limited. The recent research about Geopolymer concrete states, that it has the potential to replace the conventional cement based concrete by locally available resources. This paper focuses on presenting a brief historyand also a review of Geopolymer Concrete technology with the aim of introducing the technology and the vast categories of materials that may besynthesizedby alkali activation of alumino silicates. http://localhost:8080/xmlui/handle/123456789/1812 http://localhost:8080/xmlui/handle/123456789/1805 Title: A Survey on Sewage and Bore well Water Quality of Vrishabhavathi River Basin Authors: K Venkatesha Raju; K Venkatesha Raju; M.B. Santhosh; Alokh A.Reddy; Shashikumar Patil; Honey Sudilal Abstract: The present work aims to study the contamination status of the Vrishabhavathi sewage water and also the deterioration of surrounding groundwater quality. An erstwhile freshwater stream, now carrying huge amounts of industrial, agricultural and domestic effluents from the western part of Bangalore metropolis. There are three sewage water and the same number of groundwater samples of three different locations were collected from the Vrishabhavathi basin during post-monsoon season 2018. All the six samples were analysed for around 16 physico- chemical parameters. Both the categories of samples exhibit slightly alkaline pH with high dissolved solids and turbidity. The high level of chloride, phosphate, BOD, COD concentration in sewage water clearly indicating the extensive influx of water pollutants from both point and non-point sources leading to further deterioration of sewage water. The total hardness, total alkalinity, turbidity and phosphate concentration of borewell samples were exceeding the standard limits of BIS, revealing that the leaching of sewage into groundwater aquifers is at an alarming rate in Vrishabhavathi basin. The dissolved solids concentration and alkaline state of the borewell water may become unfit for irrigation in Vrishabhavathi river stretch, since it may lead agricultural soil to be saline and toxic over a period of time. http://localhost:8080/xmlui/handle/123456789/1805 http://localhost:8080/xmlui/handle/123456789/1809 Title: Evaluation of Nagavara lake water quality Authors: Mohammed Aslaan; Mohammed Aslaan; Mr Bhavan Kumar Abstract: Ever increasing population, urbanization and modernization are posing problems of sewage disposal and contamination of surface waters like lakes. Natural water gets contaminated due to weathering of rocks, leaching of soils and mining processing, etc. Various types of problems in lake which cause nutrient enrichment in lake have been reviewed. Land use change and longer growing seasons could increase the use of fertilizers with subsequent leaching to watercourses, rivers and lakes, increasing the risk of eutrophication and loss of biodiversity. Water quality can be assessed by various parameters such as BOD, Electrical Conductivity, Nitrate, Phosphate, Potassium, Dissolved Oxygen, etc. Heavy metals such as Nickel, Lead, chromium are of special concern because they produce water or chronic poisoning in aquatic animals. Harmful algal blooms are becoming increasingly common in freshwater ecosystems globally. Pollution by plastic debris is an increasing environmental concern in water bodies, where it affects open-water and benthic environments. Surface water densities of plastics are as high as those reported for areas of litter accumulated. It is recommended that pollution prevention and water re-use should be adopted in combination with the recycling of nutrients in controlled urban agriculture. http://localhost:8080/xmlui/handle/123456789/1809